macrophage

Researchers at Drexel University (Philadelphia, Pa.), along with collaborators at the University of Sydney in Australia, are looking to the body’s immune system for insight into why some ceramic scaffold materials promote healing better than others.

CTT reader Bart Kilinski pointed out that several of the substances listed in the tattoo ink infographic above are indeed toxic substances—particularly cinnabar and cadmium and chrome oxides. “Surely those aren’t used in tattooing,” Kilinski comments.